AMETEK MAE HY Series Hybrid Stepper Motors HY2004270900A8

Technical Dossier

Product Details And Specifications

AMETEK MAE HY Series Hybrid Stepper Motors Technical Notes

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

The Evolution of HY Series Architecture

The MAE HY Series was introduced in the late 1970s as part of a broader European initiative to standardize stepper motor form factors for industrial servo and positioning applications. Early variants used single-stack configurations with bipolar winding schemes and were designed for direct coupling to lead screw assemblies in machine tools. By the mid-1980s, MAE expanded the series to include multi-stack (double and triple stack) configurations, significantly increasing available torque without increasing the motor's footprint diameter.

The acquisition of MAE by AMETEK Inc. in the early 2000s brought standardization of connector interfaces and the introduction of IP54-rated enclosure variants for use in wash-down and dusty environments. Later revisions introduced optional encoder mounts (rear-shaft extensions) and integrated damper flanges to suppress mid-range resonance — a known limitation of open-loop stepper systems operating above 500 RPM.

The series is now in a mature/end-of-life phase. AMETEK has transitioned new designs to the MDrive and similar integrated motion platforms. However, installed base volume in legacy machinery ensures continued demand for HY Series spare parts through at least 2035.

HY Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked models within the AMETEK MAE HY Series. Models are organized by frame size and stack configuration.

NEMA 17 / 42 mm Frame

• HY200-0674: NEMA 17 single-stack, 1.8° step, 0.22 N·m holding torque, bipolar winding
• HY200-0674-A: NEMA 17 single-stack with rear shaft extension for encoder mount
• HY200-1334: NEMA 17 double-stack, 1.8° step, 0.44 N·m holding torque, bipolar 4-lead

NEMA 23 / 57 mm Frame

• HY200-2234: NEMA 23 single-stack, 1.8° step, 0.9 N·m holding torque, 4-lead bipolar
• HY200-2234-A: NEMA 23 single-stack with IP54 sealed housing
• HY200-3334: NEMA 23 double-stack, 1.8° step, 1.8 N·m holding torque, 8-lead universal winding
• HY200-4434: NEMA 23 triple-stack, 1.8° step, 2.7 N·m holding torque, high-current bipolar
• HY2004270900A8: NEMA 23 frame, 1.8° step angle, 2-phase hybrid, 4-lead bipolar winding, 0.9 A/phase rated current, 57 mm body, standard industrial duty — the subject of this listing
• HY200-3334-8: NEMA 23 double-stack, 8-lead configuration for series/parallel wiring flexibility

NEMA 34 / 86 mm Frame

• HY200-5534: NEMA 34 single-stack, 1.8° step, 3.5 N·m holding torque, 4-lead bipolar
• HY200-6634: NEMA 34 double-stack, 1.8° step, 6.0 N·m holding torque, 8-lead universal
• HY200-7734: NEMA 34 triple-stack, 1.8° step, 9.0 N·m holding torque, high-torque industrial
• HY200-6634-A: NEMA 34 double-stack with integrated rear damper flange
• HY200-5534-IP65: NEMA 34 single-stack, IP65 sealed, wash-down rated variant
• HY200-7734-E: NEMA 34 triple-stack with rear encoder mounting plate and extended shaft

Quality Control for the HY Series Range

AMETEK MAE HY Series motors present specific test challenges due to their hybrid rotor construction and the sensitivity of their winding impedance to temperature and mechanical condition. DriveKNMS applies the following test protocol to every HY Series unit processed:

• Phase resistance measurement: Both phases measured at 25°C ambient using a 4-wire Kelvin bridge. Tolerance: ±5% of nameplate specification.
• Phase inductance measurement: Measured at 1 kHz using an LCR meter. Inductance imbalance between phases must not exceed 3%.
• Insulation resistance test: 500 VDC megohmmeter applied between each phase and motor frame. Minimum acceptable: 100 MΩ.
• No-load step accuracy test: Motor driven through 200 full steps (one mechanical revolution) on a calibrated rotary encoder. Maximum cumulative error: ±3 arc-minutes.
• Holding torque verification: Static torque measured at rated current using a calibrated torque arm. Must meet ≥95% of nameplate holding torque.
• Bearing noise and runout check: Shaft runout measured with a dial indicator (max 0.02 mm TIR). Audible bearing inspection at 600 RPM under no load.
• Thermal run test: Motor operated at rated current for 30 minutes. Winding temperature rise must not exceed nameplate ΔT specification.